Kody Brown and his four wives appear in the TLC reality show 'Sister Wives'

Family sued the state after they were threatened with prosecution

Utah Attorney General's office say they intend to review the ruling

Browns are yet to decide if they will move back to Utah from where they fled

A judge has ruled that parts of Utah's law banning polygamy are unconstitutional, effectively decriminalizing the practice, in a victory for the family that appears in the reality TV show 'Sister Wives'.

Kody Brown, who stars in the TLC reality show with his four wives, filed a lawsuit against the state after leaving Utah fearing prosecution after the programme aired.

Now a federal judge has issued his final ruling in the case that strikes down parts of the state's anti-polygamy law.

Kody Brown poses with his four wives, back Janelle and Christine, front Meri and Robyn, who appear in the TLC reality TV show 'Sister Wives'. A judge has ruled that banning in polygamy in their home state of Utah is unconstitutional

U.S. District Judge Clark Waddoups has ruled that a provision of Utah's law forbidding cohabitation violated the Browns' freedom of religion.

He ruled in favour of the family in December and has now said that Mr Brown and his wives can collect attorneys' fees.